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Finding the Fourth Proportional to 573,645.20, 860,467.80 and 384,688.40

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Solution

The fourth proportional to 573,645.20, 860,467.80 and 384,688.40 is: 577,032.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,645.20 : 860,467.80 = 384,688.40 : x
  2. Step 2: Convert to fraction form
    573,645.20/860,467.80 = 384,688.40/x
  3. Step 3: Cross multiply
    573,645.20x = 860,467.80 × 384,688.40
  4. Step 4: Simplify right side
    573,645.20x = 331,011,981,233.52
  5. Step 5: Solve for x
    x = 331,011,981,233.52/573,645.20
  6. Step 6: Final answer
    x = 577,032.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.